method
to_query
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Class: Hash
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to_query(namespace = nil)
public
Returns a string representation of the receiver suitable for use as a URL query string:
{name: 'David', nationality: 'Danish'}.to_query # => "name=David&nationality=Danish"
An optional namespace can be passed to enclose key names:
{name: 'David', nationality: 'Danish'}.to_query('user') # => "user%5Bname%5D=David&user%5Bnationality%5D=Danish"
The string pairs “key=value” that conform the query string are sorted lexicographically in ascending order.
This method is also aliased as to_param.